What is ton 618?

TON 618 is an extremely distant and luminous quasar located in the constellation Canes Venatici. It harbors one of the most massive supermassive%20black%20holes ever discovered, with an estimated mass of 66 billion solar masses.

Its distance is estimated to be around 10.4 billion light-years from Earth, meaning we observe it as it was when the universe was only about 3.4 billion years old. TON 618 is classified as a hyperluminous%20quasar because of its immense brightness. The accretion%20disk surrounding its black hole is heated to extreme temperatures, emitting vast amounts of energy across the electromagnetic spectrum.

The quasar's name, TON 618, comes from the Tonantzintla Observatory catalog. Due to its extreme distance, it appears as a faint object, requiring powerful telescopes to observe and study it. Its immense luminosity allows it to be seen despite the vast distance, showcasing the extreme power of quasars powered by supermassive black holes.